Method of producing crinkled paper and product obtained thereby



.Fully 29, 19240 1,503,451'

v E. KLEPPER METHOD OF PRODUCING CRINKLED PAPER AND PRODUCT OBTAINED THEREBY Filed Dec. 10. 1923 gnve'nfoz 'EBERHZARD KLEPPER, OF CRIMMITSCHAU, GERMANY, ASSIGNOR, BY DIRECT AND MESNE ASSIGNMENTS, OF THREE-EIGHTHS TO HERMAN STERN, OF NEW YORK, N. Y., AND THIRTY-SEVEN AND ONE-HALF PER CENT T0 JOHN F. HAYES, OF WASHING- TON, DISTRICT OF COLUMBIA, AND TWENTY-FIVE PERCENT TO SAMUEL I B. SUT- PHIN, WHILIAM F.- ROSS, AND RALPH W. ROSS.

METHOD OF PRODUCING CRINKLED PAPER AND PRODUCT OBTAINED T HEREBY;

Application filed December 10, 1923. Serial No. 679,790.

To all whom it may concern:

Be it known that I, EBEBHARD KLEPPER, a citizen of the Republic of Germany, residing at Crimmitschau, Saxony, Germany, have invented certain new and useful Improvements in Methods of Producing Crinkled Paper and Product Obtained Thereby, of which the following is a specification.

-My invention relates to a method of producing a paper, having a veined or crinkled appearance, and to the paper produced thereby.

In accordance with my method, I produce a veined, crinkled or tapestry paper, which is well adapted for use as wall paper, while it may be employed for any other suitable purposes.

My method consists generally in employing a backing sheet of suitable strength, such as a suitably heavy paper, although fabric might be used. To one face of this backing sheet I apply a sizing or paste composition, and then apply to this surface a rumpled or crinkled. paper, preferably a thin tissue paper. The sizing or cement causes the rumpled or crinkled tissue paper to adhere to the backing sheet, and the two sheets are then preferably passed between the heating rolls, whereby the product is dried. The dried paper then preferably passes into a chamber in which it is subjected to the action of cold moist air which serves to restore the original lustre to the paper and improve its appearance.

In the accompanying drawings, forming a part of this specification, and in which like numerals are employed to designate like parts throughout the same,

Figure 1 is a central vertical longitudinal section through an apparatus employed in the practice of my method,

Figure 2 is aplan view of a section of the completed product, and,

Figure 3 is a detail section through the same.

In the drawings, wherein for the purpose of illustration is shown a preferred embodiment of my invention, the numeral 5 designates a supporting frame, embodying a table 6.

Arranged at one end of the frame 5, near its lower end, is a cylinder 7, carrying a roll 8 of a backing sheet or strip, such as a suitably heavy paper or fabric. The cylinder 7 is detachably rotatably mounted upon arms or brackets 9, secured to the 'frame. The heavy backing sheet from the roll 8, designated 8', passes over the table top 6 and travels longitudinally thereof to the right.

The frame 5 is provided near its top and at its left end with arms 10, detachably and rotatably supporting a cylinder 11, which carries the roll 12 of the rumpled or crinkled paper, such as Ztissue paper. Now this paper may be rumpled or crinkled before being wound upon the cylinder 11, and it should not be drawn too tightly so that the crinkles or rumples would be smoothed out, as the paper must be fed in the crinkled 0r rumpled condition to the upper surface of the backing sheet 8'. The crinkled paper 12:, from the roll 12, first passes over an upper table 13, and then down about vertical rollers 14:, and continues in a horizontal direction in contact with the backing sheet 8', about a roller 15, as shown.

Arranged in the upper portion of the 7 frame 5, near its left end, is a tank or receptacle 16, for holding the sizing or paste, which is in a suitably semi-fluid condition, whereby it may be discharged in a substantially uniform manner to the upper surface of the backing sheet 8. This sizing or paste is discharged from the lower end 17 of the tank 16, which may be provided with apertures of suitable fineness at its bottom. The

bottom 17 extends for substantially the entire width of the backing sheet 8', as is obvious. Supported in advance of the bottom or outlet 17 is a brush 18, which applies the sizing or paste evenly to the surface of the backing sheet 8'. This backing sheet is relatively stout or heavy and free from crinkles. It is thus seen that this surface of the backing sheet, with the sizing or paste thereon, and while wet, receives the crinkled or wrinkled upper sheet or tissue paper 12'. These two layers of paper then discharge from the roller 15, and are subjected to a suitable compression and heat, in a closed receptacle or chamber. Prior to the passage to the roller 15, the 11 per and lower sheets, while cemented togetier and damp or wet,

travel over a trough 15', supported beneath the table 6. This trough projects beyond the edges of the table and holds aniline dye, which may be applied by hand to the upper surface of the damp crinkled paper.

This heating means embodies a chamber 19, in which are three suitably supported rollers or cylinders 20, 21 and 22. These cylinders 20 and 22 are preferably in the same horizontal plane, while the cylinder 21 is in a higher elevation. The cylinders are covered with an asbestos sheet or facing 23, and a cover 24 of linen or other fabric so that the paper will not stick to the metal wall of the cylinder, or burn. The cylinders are equipped with electrical heating means, such as resistance coils 23, arranged therein. It is preferred that the first cylinder 20 be heated to a temperature of about 40 (1, the

second cylinder to a temperature of 0., and the third cylinder to a temperature of 90 C. The paper embodying the upper and lower sheets is passed beneath the cylinder 20, above the cylinder 21, and then beneath the cylinder 22. These cylinders are free to rotate and are turned by the pull upon the paper.

The paper passing from the chamber 19 next discharges into a closed chamber 24, in which are mounted rollers 25, at different elevations, so that the paper is made to travel in a plurality of runs through the same. The paper is drawn through the chamber 24 by passing abouta cylinder or roller 26, and being wound upon a cylinder 27, which may be turned by a crank 28. It might be stated at this point that the invention is in no sense restricted to this method of advancing the paper, although it is believed to be satisfactiry. The drying cylinders might be mechanically driven, ifdesired. Also, the cylinder 11. carrying the crinkled or rumpled paper may be turned by hand, to relieve this paper of any strain,

which would tend to uncrinkle the paper, or it might be mechanically driven. However, this roll of paper is light and will turn freely, and it is ordinarily not necessary to drive the same. When the paper passes from the heating rolls, it may be found that it has lost some of its healthy fresh appearance, or lustre, and I have found that this may be restored within the chamber 24 by circulating moist cold air in cpntacttherewith. This is efi'ected by means of a blower 29, the air discharging through the outlet 30.

In the use of the ap aratus in the practice of my method, the bac 'ng sheet 8 is caused to. travel longitudinally upon the table 6, and the upper crinkled sheet 12 is caused to travel longitudinally and is brought upon the upper surface of the backing sheet which is coated with the sizing or paste. These two sheets thus secured together are passed ing the maximum heat, it is dry and then discharges into the chamber 24, wherein it is subjected to the action of moist cold air, which restores the fresh healthy appearance or lustre to the paper. The product is then wound upon the cylinder 27, which is shown as the means for effecting the. longitudinal travel of the paper. The paper is ordinarily made with a margin at the edges, which must be cut off, and I also contemplate winding the paper from the cylinder 27 and rewinding the same in rolls of desired length, ready for being placed upon the market.

It is to be understood that the form of my invention herewith shown and described is to be taken as a preferred example of the same, and that various changes in the shape, size and arrangement of parts of the apparatus may be resorted to, and also that changes may be made in the steps of the method, and their order, without departing from the spirit of my invention or the scope of the subjoined claims.

Having thus described my invention, I claim: I

1. The hereindescribed method of pro ducing a tapestry paper, comprising eifecting the longitudinal travel of a backing sheet upon a relatively long flat supporting surface, applying a paste to the upper surface of the backing sheet thus fed and supported, feeding a crinkled tissue paper to the upper surface of the backing sheet thus treated, subjecting the sheets thus treated. to the action of heat which progressively increases in temperature in the direction of travel of the sheets, and then subjecting the dried product to the action of a moist current of air at a lower temperature than the heat treatment.

2. The hereindescribed method of producing tapestry paper, comprising effecting the longitudinal travel of the backing sheet upon a relatively long flat support, applying a paste to the upper surface of the backin sheet while thus traveling and supportef, feeding a crinkled tissue paper to the upper surface of the backing sheet thus treated whereby the two sheets are united without substantially removing the crinkles from the dried paper to the action of and fed, feeding a crinkled paper to the upper coated surface of the backing sheet thus supported and fed whereb the two sheets may be united without su stantially removing the crinkles from the crinkled tissue paper, subjecting the two sheets thus united to the action of pressure and heat until they are dried, then subjecting the a moist current of air at a lower temperature than the drying temperature.

4:. The hereindescribed method of roduoing a tapestry paper, comprising e ect ing the longitudinal travel of a backing sheet upon a relatively long flat support,

applying a paste to the upper surface of the backing ing a crinkled tissue paper to the upper coated surface of the backing sheet thus supported and fed whereby the two sheets are united without'the crinkles being substantially removed from the tissue paper, applying to the tissue paper thus treated a liquid coloring matter, subjecting the two sheets thus united to the action of pressure and heat until they are jecting the dried paper to the action of a current of moist air at a temperature below that of the drying temperature.

sheet thus supported and fed, feeddried, and then sub- T In testimony whereof I aflix my signature.

EBERHARD KLEPPER. 

